At first glance it looks as if there is no element of "present involvement" in this use of the present perfect any more than in the simple past.
乍看起来，在现在完成时的用法中，似乎跟在一般过去时中一样，都没有“涉及现在”的因素。
We also use the present perfect to talk about a series of repeated actions which have happened up to the present.
我们也使用现在完成时谈论一系列重复的行为，这些行为到现在还发生。
At present, what we should be done is to perfect the theory construction, to connect the theory and technique, to examine the teaching content and also to make use of the assisting cases.
目前，需要整改的地方是，完善理论构建，理论和技巧要紧密结合，对教学内容要进行认真的甄别，要用案例辅助。
At present, what we should be done is to perfect the theory construction, to connect the theory and technique, to examine the teaching content and also to make use of the assisting cases.
目前，需要整改的地方是，完善理论构建，理论和技巧要紧密结合，对教学内容要进行认真的甄别，要用案例辅助。
应用推荐